Both equations are equations of a line. All options have the form:
y = a*x
where y and x are the variables and a is the slope.
The slope of the equation corresponding to machine B is less than the machine A's slope (machine A line is above machine B line). The only option in which the slope is less than 3 is y = 1.5*x.
The correct answer is y = 1.5x, A. I am sure it is because I took the K12 test. I used the answer from the other person that answered this, and got it wrong. I reviewed the test, and It says that 1.5x is correct.
